Given two points `P\ a n d\ Q` , find how many line segments do they deter-mine. Name the line segments determined by the three collinear points `P ,\ Q\ a n d\ Rdot`

Explanation

To solve the problem, we will break it down into two parts:

1. Finding how many line segments are determined by two points \( P \) and \( Q \).
2. Naming the line segments determined by three collinear points \( P \), \( Q \), and \( R \).

### Step 1: Finding line segments determined by two points \( P \) and \( Q \)

When we have two distinct points, they determine exactly one line segment. A line segment is defined as the straight line that connects two points.
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